UPS: Routing Optimization and ORION

UPS runs one of the most complex delivery networks on earth: roughly 100,000 vehicles, millions of packages a day, routes that shift by the hour. For decades dispatchers set those routes by hand. Then, starting in the early 2000s, the company spent years building a navigation system called ORION around one counterintuitive rule that sounds almost too small to matter. Drivers had to be trained and convinced. The payoff, measured in tens of millions of miles a year, only shows up when you multiply something tiny by enormous volume.

For founders and operators, this is the case about where real advantage actually lives in a high-volume business. It sharpens the decision of where to spend engineering effort: the flashy redesign, or the unglamorous tweak applied a hundred thousand times a day. The numbers behind ORION reframe what a "rounding error" is worth when you scale it, and what that implies for your own most-repeated process.